Heating apparatus.



PATENTBDJUNEQ, 1903.

J.-SOSBNHBIMER. HEATINGAPPARATUS.

APPLIOA TIOH FILED IEB. 4, 1903.

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'PATBNTED JUNE 9, 1903.

J. sogfiunmmn. HEATING. APPARATUS. AIPLIOATIOEIILED rm. 4. 1903.

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UNITED STATES Patented June 9, 1903.

PATENT OFFIC I I JACGBfiOSENHEIMEfi. OF-GALION, OHIO.

HEATING APPARATUS.

srncrrrcA'rroiv forming part of Letters Patent Nat/30,578, dated June 9,1903.

Application filed February 4, 1903, Serial Ho. 141,851. (No model-) ToctZZ whom it may concern:

Be it known that I, JAooB Sosnnrrnrnun, a citizen of the UnitedStates,residingat Galion in the county of Crawford and Stateof Ohio,have invented a certain new and useful Improvement 'in Heating'Apparatus, of which the following is afull, clealgand exact descrip-'tion, referencebeing had to the accompanying drawings.

Hot-air heaters have heretofore been constructed for using gas or otherfuel, and these constructions have had a drum exposed to the heat of thefire in such a way that the air inside of the drum will be .heated andconducted away for heating purposes. Under many conditions thisconstruction will operate fairly well; but when a-very hot fire is used,as when natural gas is employed as a medium for fuel, it has been foundby practice that the drum is heated so hot, and consequently the airinside to such an extent,

that when this small volume of highly-heated air is discharged into aroom the effect is that either all of the'life is burned out of the airor else it is so small in quantity that it will heat only a smallportion of the room. It has also been difficult in gas-stoves toregulate or control the amount of hot air which is given off by thesedevices except by reducing the size of the flame, which-oftentimes takesthe hottest part of the flame from the heating-surface of the air-drum,reducing the efficiency of operation.

The object of this invention, therefore, is to obviate the difficultiesby, first, providing in connection with the ducts which lead from theheating-drum another duct which leads fromthecold-air supply, so thatthe hot airwill be mixed with cold air and the two will be discharged aswarm air; secondly, providing in connection with the heating: drum avalve which will short-circuit the current of hot air. over the flame,and will thus cut down the heat given off by the stove, and, lastly,providing. suitable passages for conveying away the products ofcombustion and at the same time baffling out of contact with the heatedair the progress of these prodso that the greatest possible amount ofheat may be obtained from the fuel used.

Figure 1 of the drawings is a perspective view of a stove constructedaccording to my stove-frame, as B. The casing able pipes with a chamber0 invention with the stove-body or outer casing indicated by dottedlines and parts of the inner casing or stove proper and drum brokenaway, so as to more fully disclose the included parts. Fig. 2 is a rearview of the stove,- showing the fine-pipe and having a portion .oftheback plate broken away, so as to disclose the fine for the productsof combustion with the baffies arranged therein. Fig. 3 is atop planwith a portion-of the casing broken away to more clearly show thepassage between the baffles in the flue.

Fig. 4 is a vertical sectional view through the width of the stove. Fig.5 is a-vertical sectional view from front to back, and Fig. 6 is ahorizontal sectional view taken on the line 6 6 of Fig. 4.

Referring to the parts by letters, A represents the inner casing orstove proper of substantially the form shown in the drawings. Thiscasing may be contained in any suitable A has a per forated or openbottom A, an exit-pipe A in the back,and the openings A in the top.Mounted above the bottom plate A at any suitable height therefrom is thegrate C, which may contain pieces of fire-brick to be heated by thegas-burners C under the same. These burners are shown as connected bysuitand inlet-pipes O bring' the gasto this chamber. Two of thes'epip'esG are provided, so that, if desired,

one may be connected with a naturalgas main and the other with anartificial-gas main. If desired, the gas need not be used, but coalburned upon the grate; but I prefer to use natural gas.

At oneside of the stove or any other suitable placeI provide anair-inlet duct D, which communicates with the heating-drum D, arrangedover the fire. This drum I have shown constructed in the formof abox,narrowing downward, so that it will present its side faces to the flame.Within-this heating-drum D is a plate 61, which slopes from the top ofthe inlet end of said drum downward toward the opposite endthereof,leaving a passage around its end for the current of air as it isheated. Through the plate (1 is an opening (1, which is arranged to beclosed by a flap d hinged to said plate. This flap is opened and closedby means of the rod 01 pivotally connected at its inner end to the arm(1, secured to the flap, and at its outer end carrying the nut 61 bywhich it is adjusted longitudinally.

Leading from the top of the heating-drum D are pipes E, three beingshown in the drawings, for the purpose of conducting away the air as itis heated in the drum. These pipes are connected at their upper endswith a mixing-chamber F, suitably mounted in the easing and havingconnected therewith cold-air ducts F and F which extend, preferably, tothe bottom of the casing, where they are supplied with air through theopenings in the bottom plate and also in the sides, as shown at f PipesG are arranged above the mixing-chamber F for carrying the warm air outinto the room. The cold-air duct F extends across the entire width ofthe casing behind the grate and slants forward and upward from thebottom to the point where it joins the chamber F, thus leaving behind ita flue J for the escape of the products of combustion. Themixing-chamber F does not extend to the front or to the rear of thecasing, so that the products of combustion are permitted to pass betweenthe two, around the pipes G, and back to the flue J and out of theflue-pipe A In passing down through the fine J just mentioned, betweenthe vent F and the back of the casing, the products of combustion arebaffled toward the center by two plates H and then out again away fromthe center by a third plate H, when they are.

permitted to pass out of the flue-pipe A By this I mean their current isretarded and much of their heat given up to the air in the chamber F andduct F thus heating that air. The additional duct F, which dischargescold air directly into the mixing-chamber, is of great value inincreasing the quantity of air warmed to the proper temperature which myapparatus gives. I am thus enabled to obtain the maximum efficiency ofthe fuel while evenly heating the room.

It will be seen from the foregoing description that when the gas fromthe burner is ignited below the grate the pieces of fire-brick will beheated and the products of combustion, together with a few small flames,will rise and surround the heating-drum D. The heating of this drumnecessarily heats the air within it, which passes up through the pipes Eto the mixing-chamber F, where it receives a quantity of cold air fromthe coldair duets F and F after which it passes as I warm air throughthe pipes G out into the room.

If it is desired to have the quantity of highlyheated air which goesinto the mixing-chamber reduced in volume, the rod 02 is operated so asto open the flap'd which permits a portion of the air from the air-ductD to pass up through the opening d and through the pipes E into themixing-chamber without traveling over the entire fire.

Having described my invention, I claim- 1. The combination of a casing,a heating device, an air-heating drum cooperating therewith, anindependent mixing chamber located above said drum, pipes leading fromsaid heating-drum to said mixing-chamber, a cold-air duct leadingdirectly to said mixingchamber, and pipesleading from saidmixing-chamber to the outside of the casing.

2. The combination with a heating device, of a heating-drum cooperatingtherewith, an air-duct leading to said drum, an independentmixing-chamber communicating with said drum, a coldair duct connectedwith said mixing-chamber, pipes for conducting away the heated air fromsaid mixing-chamber, and a casing'containing the parts mentioned andproviding between itself and the cold-air vent a flue for. leading awaythe products of combustion.

3. The combination with a heating device, a heating-drum cooperatingtherewith, an airduot leading to said drum, a mixing-chambercommunicating with said drum, a cold-air duct connected with 'saidmixing-chamber, distributing-pipes leading from said mixingchamber, andmeans for conducting away the products of combustion in proximity to theincoming air and baffling their progress.

4. The combination with the casing, a burner mounted in said casing, anair-heating drum arranged over said burner, an air-duct leading to saiddrum, a mixing-chamber, pipes connecting said heating-drum with saidmixing-chamber, cold-air ducts leading from the outside of said casingto said mixing-chamber, pipes leading from said mixing-chamber to theoutside of said casing, and a flue for conducting away the products ofcombustion.

5. The combination with a casing, a burner within the same, aheating-drum over the burner, a passage for conveying the heated airfrom the drum, a cold-air duct communicating with said passage, saidduct leading from the lower part of the apparatus and leaving a fluebetween it and the casing, and baffle-plates in said flue.

6. Ina heating apparatus, the combination of three ducts leading to acommon dischargeopening, a heating-drum interposed in one of said ducts,a burner in proximity thereto,

means for conveying the products of combustion from said burner inproximity to another of said ducts, the third duct being out of thegeneral course of said products of combustion, whereby a large amount ofheat is absorbed from the fire and a large amount of warm air delivered.v

7. The combination with a casing, a burner mounted within the casing, aheating-drum arranged over the burner, an air-duct leading to said drum,a mixing-chamber communicating with said drum, a cold-air duct leadingtosaid mixing-chamber and leaving a fiue between it and the casing, and anadditional cold-air duct communicating with said mixing-chamber.

8. The combination with the casing of a heating device Within saidcasing, an airheating drum mounted above said heating device, a ductleading from the outside of said casing to said drum, a plate withinsaid drum for causing the incoming air to pass toward the opposite endthereof, a suitable valve in said plate, a mixing-chamber within saidcasing, pipes connecting said drum and said mixing-chamber, a cold-airduct leading from the outside of said casing to the mixingchamber, meansfor conducting away the heated air from said mixing-chamber, and a fluefor conducting away the products of combustion. V

9. The combination with the casing, of a. burner mounted therein, aheating-drum sus-.

pended above said burner, an air-duct lead-

